1) Coelenterate genus 2) Genus acropora 
Acropora is a genus of small polyp stony coral in the phylum Cnidaria. Some of its species are known as table coral, elkhorn coral, and staghorn coral. Over 149 species are described. Acropora species are one of the major reef corals responsible for building the immense calcium carbonate substructure that supports the thin living skin of a reef. =...
[n] - coelenterate genus of order Madreporaria, including staghorn corals
genus Acropora noun coelenterate genus of order Madreporaria, including staghorn corals